html,body,.wrapper{
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    font-family:PingFangSC-Medium;
}
.wrapper{
    background:rgba(247,246,252,1);
    position: relative;
}
a{
    text-decoration: none;
    color:#199CFB;
}
li{
    list-style: none;
}